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Finding the Fourth Proportional to 266,404.83, 399,262.79 and 199,318.60

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Solution

The fourth proportional to 266,404.83, 399,262.79 and 199,318.60 is: 298,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,404.83 : 399,262.79 = 199,318.60 : x
  2. Step 2: Convert to fraction form
    266,404.83/399,262.79 = 199,318.60/x
  3. Step 3: Cross multiply
    266,404.83x = 399,262.79 × 199,318.60
  4. Step 4: Simplify right side
    266,404.83x = 79,580,500,211.10
  5. Step 5: Solve for x
    x = 79,580,500,211.10/266,404.83
  6. Step 6: Final answer
    x = 298,720.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.